Vacuum and boiler-feed pump



y 1929- B. SKIDMORE. JR

VACUUM AND BOILER FEED PUMP Filed July l8, 1927 lNVENTOR BQJlJOYMnSkidmore. Jr.

Patented May 28, 1929. v

UNITED STATES PATENT OFFICE.

BENJAMIN SKIDMORE, JR, OF GLENCOE, ILLINOIS, ASSIGNOR TO MINETTE E.SKID- MORE, OF CHICAGO, ILLINOIS. I

VACUUM AND BOILER-FEED PUMP.

Application filed July 18,

This invention relates to improvements in vacuum and boiler feed pumpsfor use in steam heating sustems and for other purposes where liquid andgases are simultaneously handled, and one of the objects of theinvention is to construct and arrange the various parts so that the pumpbearings, flexible couplings and subbase are eliminated, and at the sametime produce a com,- pact, sturdy unit of pleasing design, at aconsiderable saving in Weight and cost of manufacture and requiring aminimum amount of floor space for installation.

To the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in substantially the combination and arrangement of the severalparts as hereinafter more fully described and claimed and as shown inthe accompanying drawing illustrating this invention, and in whichdrawing;

The figure is a view partly in vertical section and partly in elevationof a pumping apparatus of this character embodying the features of thisinvention.

Referring more particularly to the drawing the numeral 10 designatesgenerally a receiver or container which is provided with an air outlet11.

The receiver is provided with an opening 14 adjacent its bottom and thisopening is preferably of a size to form both an inlet and an outlet forthe receiver.

The numeral 15 designates generally a pump casing in which is arranged asuction pump for handlin the condensates and air and delivering theminto the receiver.

Any suitable form of suction pump may be usedin connection with thisapparatus, but in the present exemplification of this invention, and forthe purpose of a clear understanding of the operation of the same, thedrawings illustrate a suction pump sim ilar to that disclosed in UnitedStates Patent 1,390,390, issued September 13, 1921.

The pump consists essentially of thecasing 15, within which is arrangeda. rotor 16 adapted to co-operate with a stationary member 17 havingopenings 18. The pump casing is provided with an inlet opening 19constituting a suction inlet for the condensates and air and leads to anannular chamber 20, which connects through member 17 to openings 18. Inthe member 15 is a pas- 1927. Serial No. 208,448.

sageway 21, which latter is connected with the opening 14 of thereceiver 10 so that the operating water or liquid for the pump will besupplied to the pump through the passage 21 at a low elevation. When therotor 16 is rotated suction will be created so as to draw thecondensates and air in through the suction inlet 19, the operating waterbemg supplied through the passage 21. The a r and water drawn in by therotor will be discharged into the receiver or separator 10 through apassage 22 and the opening 14.

The'passages 21 and 22 in the pump cas mg may be surrounded by a flange23 which abuts a surface on the wall of the receiver 10, and the pump isfastened to the receiver by means of suitable fastening bolts passingthrough the flange.

Depending from the pump casing is a short leg 24 and projections orformations 25 extend from the bottom of the receiver 1.0. This leg 24and formations 25 constitute a support for the receiver and the pumpcasing.

Arranged above the suction pump is another pump 26 preferably ofcentrifugal type, and the pump 26 and the rotor 16 are superposed andare suspended from a vertical shaft 27. A motor 28 is supported by thepump casing preferably through the medium of a formation 29 which may bein the form of uprights or of a circular flange projecting above thecasing. If in the form of a flange, one or more openings 50 may beprovided in the flange to permit access to some of the parts.

The rotors may be connected with any suitable power mechanism foroperating them, but preferably by telescoping or otherwise connectingthe vertical shaft 27 with the shaft 31 of the motor 28, therebyrendering it possible to readily remove the motor without dismantlingthe remaining parts of the mechanism.

Leading from the receiver 10 is an opening 32 arranged preferably at acomparatively high elevation and through which opening excess water orliquid in the receiver 10 is adapted to flow.

Communicating with this opening 32 is a pipe or conduit 33 which leadsto the suction eye 34 of the centrifugal pump 26, and serves as a meanswhereby the excess. liquid will be conveyed to the pump 26 to bedischarged through a shiftable discharge outlet be secured to a surface.on the wall of the receiver.

With this improved construction it will be manifest that pump bearings,a flexible coupling and a subbase for the apparatus will be dispensedwith and a compact, sturdy unit of a comparatively light weight will beproduced and the pumpcasing and separating tank or receiver willconstitute the sup port therefor.

What is claimed as new is 1. As a unitary structure a pump casing,

a suction pump of a liquid using type there-' in, a boiler feed pumpalso in the casing, each of said pumps embodying a rotor, a

liquid receiver to which the said pumps are.

connected, the'suction pump delivering to the receiver and the feedpuinp removing the contents of the receiver, a vertical shaft from whicheach'of said rotors is suspended, and a motor mounted upon the saidcasing for rotating theshaft, the suction rotor receiving its supply ofoperating liquid from a point in proximity to the bottom of the saidreceiver.

2. As a unitary structure, a pump casing, a vacuum pump therein, aboiler feed pump also in the casing, each of said pumps embodying arotor, a liquid receiver with which the pumps have communication and towhich receiver the said pumps are attached, the

ceiver constituting the so e support for the structure. Y

3. As a unitary structure, a pump casing, a suction pump therein, apressure pump also in said casing, each of said pumps embodying a rotor,a liquid receiver with which the pumps have communication and to whichreceiver the pumps are attached,- the suction pump delivering to thereceiver and the feed pump removing the contents of the receiver, avertical'shaft from which each of said rotors is suspended, and meansfor rotating the shaft, the pump casing and the said receiverconstituting the sole support for the structure.

In testimony whereof I have signed my name to this specification, onthis 15th day of July, A. D. 1927-.

BENJAMIN SKIDMORE, JR.

